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今天小編為大家帶來的是<談ps系列（31）|ps漸變工具講解。
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Dear you, this is LearningYard Academy.
What Xiaobian brings to you today is<Talk about ps series (31) |Ps Gradient tool explanation.
PART.1.
一、回顧：參考線與測距離
在我們學習今天的知識前，回顧下上期所學的知識點：參考線與測距離。ps中參考線的定義：參考線是以浮動的狀態顯示在圖像上方，常與「標尺」共同使用，可以幫助用戶精確地定位圖像或元素。在測定時，需要點開視圖中的智能參考，可以幫助我們進行尺寸的測定。
今日我們講解漸變工具。漸變色就是一個顏色向另一個顏色的過渡。漸變工具在左側工具欄如下圖所示。
1、 Review: Reference line and measuring distance
Before we learn today's knowledge, review the knowledge points we learned in the previous period: reference line and measuring distance. Definition of reference line in ps: the reference line is displayed above the image in a floating state, and is often used together with the "ruler" to help users accurately locate the image or element. When measuring, we need to open the intelligent reference in the view to help us measure the size.
Today we will talk about gradient tools. A gradient is a transition from one color to another. The gradient tool on the left toolbar is shown below.
二、漸變工具屬性欄講解
選擇漸變工具，上方屬性欄如下圖所示，從左至右，第一個有漸變顏色的長方框與所選前景色和後景色有關，通過在色板上拖拽線條即可選擇漸變方向。摁住shift可以選擇100%的橫向和縱向以及固定的角度。
漸變工具有以下注意點：
1、漸變工具只能對位圖圖層生效；
2、漸變工具是「一次性」的，及一個圖層只能使用一次漸變，不能疊加使用，只能創建新的圖層使用漸變工具。
後面的是漸變的方式，從左至右依次是線性漸變，徑向漸變，角度漸變，對稱漸變，菱形漸變。如下圖所示，菱形漸變的效果。
接下來看如何來編輯，點擊漸變顏色的長方形，進入編輯欄，可以在裡面修改顏色不影響到前景色和後景色，另外在漸變中使用前景色和後景色，只可以使用2個顏色，但是在編輯欄中就可以添加第三個顏色。
2、 Explanation of gradient tool property bar
Select the gradient tool. The upper property bar is shown in the following figure. From left to right, the first rectangle with gradient color is related to the selected foreground and background color. You can select the gradient direction by dragging the line on the color palette. Press and hold the shift to select 100% horizontal and vertical and fixed angles.
The gradient tool has the following points:
1. The gradient tool only works on bitmap layers;
2. The gradient tool is "one-time", and a layer can only use a gradient once, and cannot be superimposed. You can only create a new layer to use the gradient tool.
The following is the way of gradient, from left to right is linear gradient, radial gradient, angle gradient, symmetric gradient, and diamond gradient. As shown in the following figure, the effect of diamond gradient.
Next, see how to edit. Click the rectangle of the gradient color and enter the edit bar. You can modify the color inside without affecting the foreground and background colors. In addition, you can use only two colors in the foreground and background colors in the gradient, but you can add a third color in the edit bar.
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部分文字參考：百度百科
示例圖片來源：百度
翻譯：百度翻譯